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1. 发明申请

WO2011095260A1 MANAGING PREDICTED MOTION VECTOR CANDIDATES 审中-公开
标题翻译：管理预测运动矢量候选人
公开(公告)号：WO2011095260A1
公开(公告)日：2011-08-11
申请号：PCT/EP2010/070680
申请日：2010-12-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , RUSERT, Thomas , ANDERSSON, Kenneth , WENNERSTEIN, Per , STROM, Jacob , SJOBERG, Rickard
发明人： RUSERT, Thomas , ANDERSSON, Kenneth , WENNERSTEIN, Per , STROM, Jacob , SJOBERG, Rickard
IPC分类号： H04N7/26
CPC分类号： H04N19/105 , H04N19/137 , H04N19/176 , H04N19/52
摘要： There is provided a method of managing PMV candidates. The method comprises selecting a set of PMV candidates as a subset of the previously coded motion vectors. The method further comprises assigning a code value to each PMV candidate in the set of PMV candidates. The code values vary in length and are assigned to the PMV candidates in order of expected usage such that the PMV candidate having the highest expected usage has one of the shortest code values.
摘要翻译：提供了一种管理PMV候选人的方法。该方法包括选择一组PMV候选作为先前编码的运动矢量的子集。该方法还包括向PMV候选集合中的每个PMV候选分配码值。代码值的长度不同，按照预期的使用顺序分配给PMV候选，使得具有最高预期使用的PMV候选具有最短代码值之一。

2. 发明申请

WO2011095259A1 SELECTING PREDICTED MOTION VECTOR CANDIDATES 审中-公开
标题翻译：选择预测运动矢量候选
公开(公告)号：WO2011095259A1
公开(公告)日：2011-08-11
申请号：PCT/EP2010/070679
申请日：2010-12-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , RUSERT, Thomas , ANDERSSON, Kenneth , WENNERSTEIN, Per , STROM, Jacob , SJOBERG, Rickard
发明人： RUSERT, Thomas , ANDERSSON, Kenneth , WENNERSTEIN, Per , STROM, Jacob , SJOBERG, Rickard
IPC分类号： H04N7/26
CPC分类号： H04N19/105 , H04N19/137 , H04N19/176 , H04N19/52
摘要： There is provided a method of selecting PMV candidates, wherein each PMV candidate corresponds to a motion vector used for coding of a previous block, said previous block having a distance from a current block. The method comprises identifying allowed distance values of distances between the current block and the previous block. The method further comprises selecting a set of PMV candidates as a subset of the set of previously coded motion vectors that were used for previous blocks having an allowed distance from the current block.
摘要翻译：提供了一种选择PMV候选的方法，其中每个PMV候选对应于用于前一块的编码的运动矢量，所述先前块具有与当前块的距离。该方法包括识别当前块和先前块之间的距离的允许距离值。该方法还包括选择一组PMV候选作为先前编码的运动矢量集合的子集，其用于具有来自当前块的允许距离的先前块。

3. 发明申请

WO2011095583A2 IMPROVED METHOD AND APPARATUS FOR SUB-PIXEL INTERPOLATION 审中-公开
标题翻译：改进的子像素插值方法和装置
公开(公告)号：WO2011095583A2
公开(公告)日：2011-08-11
申请号：PCT/EP2011/051642
申请日：2011-02-04
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , ANDERSSON, Kenneth , SJOBERG, Rickard , WU, Zhuangfei
发明人： ANDERSSON, Kenneth , SJOBERG, Rickard , WU, Zhuangfei
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523 , H04N19/117 , H04N19/127 , H04N19/159 , H04N19/176
摘要： There is provided a method and apparatus for decoding an encoded video stream. The method comprises receiving an indication of a motion vector for a current picture, the motion vector referring to a previously decoded picture. The method also comprises applying a mask, the mask defining a subset of sub-pixel positions of the previously decoded picture which may be referenced by the motion vector for the current picture. The method further comprises identifying at least one pixel value for the current picture by referring to the value of at least one pixel in an allowed pixel position of the previously decoded picture.
摘要翻译：提供了一种用于对编码的视频流进行解码的方法和装置。该方法包括接收当前图像的运动矢量的指示，该运动矢量参考先前解码的图像。该方法还包括应用掩模，该掩模定义了可由当前图像的运动矢量参考的先前解码的图像的子像素位置的子集。该方法还包括通过参考先前解码的图像的允许的像素位置中的至少一个像素的值来识别当前图像的至少一个像素值。

4. 发明申请

WO2011010959A1 METHOD AND APPARATUS FOR ENCODING AND DECODING OF IMAGES 审中-公开
标题翻译：用于编码和解码图像的方法和装置
公开(公告)号：WO2011010959A1
公开(公告)日：2011-01-27
申请号：PCT/SE2010/050286
申请日：2010-03-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , PRIDDLE, Clinton , NORKIN, Andrey , WU, Zhuangfei
发明人： ANDERSSON, Kenneth , PRIDDLE, Clinton , NORKIN, Andrey , WU, Zhuangfei
IPC分类号： H04N7/50
CPC分类号： H04N19/00157 , H04N19/105 , H04N19/117 , H04N19/129 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/19 , H04N19/46 , H04N19/61 , H04N19/86 , H04N19/88
摘要： An encoding method for encoding of images and corresponding decoding method is disclosed, as well as an encoder and a decoder. The encoding method comprises creating, in an encoder, a residual block from an original block and a prediction block which is an approximation of the original block, wherein the created residual block comprises residual block elements. The en-coding method further comprises re-ordering, in the encoder, the residual block elements within the residual block; and applying, in the encoder, a transform to the re-ordered residual block. By re-ordering the residual block elements prior to applying a transform, an improved efficiency of the encoding may be obtained.
摘要翻译：公开了一种用于编码图像的编码方法和相应的解码方法，以及编码器和解码器。编码方法包括在编码器中创建来自原始块的残差块和作为原始块的近似的预测块，其中所创建的残余块包括残余块元素。 en编码方法还包括在编码器中重新排序剩余块内的残余块元素; 以及在编码器中对重新排序的残余块应用变换。通过在应用变换之前重新排序残余块元素，可以获得改进的编码效率。

5. 发明申请

WO2009088353A1 SYSTEMS AND METHODS FOR USING DC CHANGE PARAMETERS IN VIDEO CODING AND DECODING 审中-公开
标题翻译：在视频编码和解码中使用直流变化参数的系统和方法
公开(公告)号：WO2009088353A1
公开(公告)日：2009-07-16
申请号：PCT/SE2009/050005
申请日：2009-01-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
发明人： ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
IPC分类号： H04N7/50 , H04N7/26
CPC分类号： H04N19/82 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/463 , H04N19/61 , H04N19/70
摘要： The present application discloses systems and methods for using DC change parameters in video coding. In one embodiment, the method includes the steps of: (a) obtaining a DC change parameter; (b) decoding encoded video data to obtain reconstructed pixel values; and (c) using the reconstructed pixel values, a filter, and the DC change parameter to obtain filtered reconstructed pixel values with a DC change.
摘要翻译：本申请公开了在视频编码中使用DC变化参数的系统和方法。在一个实施例中，该方法包括以下步骤：（a）获得DC变化参数; （b）解码编码的视频数据以获得重建的像素值; 以及（c）使用重建的像素值，滤波器和DC变化参数来获得具有DC变化的经滤波的重构像素值。

6. 发明申请

WO2011096869A1 DE-BLOCKING FILTERING CONTROL 审中-公开
标题翻译：去阻塞过滤控制
公开(公告)号：WO2011096869A1
公开(公告)日：2011-08-11
申请号：PCT/SE2010/051494
申请日：2010-12-29
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/82
摘要： First and second filter decision values are calculated for a pixel block (10) in a video frame. The first filter decision value is representative of how smoothpixel values in a first line of pixels (11, 13, 15, 17) in the block (10) and in a corresponding first line of pixels (21, 23, 25, 27) in a neighboring pixel block (20) in the video frame are in a direction parallel to a filtering direction. The second filter decision value is representative of how close pixel values in a current line (12) of pixels (11, 13, 15, 17) in the block (10) approximate a flat line and how close pixel values in a corresponding current line (22) of pixels (21, 23, 25, 27) in the neighboring block (20) approximate a flat line. The two filter decision values are compared to respective thresholds and a strong de-blocking filter is selected for the current line (12) if the filter decision values are below the thresholds, otherwise a weak de-blocking filter is selected to combat any blocking artifacts.
摘要翻译：针对视频帧中的像素块（10）计算第一和第二滤波器判定值。第一滤波器判定值表示块（10）中的像素（11,13,15,17）中的像素（21,23,25,27）的对应的第一行中的平滑像素值如何在视频帧中的相邻像素块（20）处于与滤波方向平行的方向。第二滤波器判定值表示块（10）中的像素（11,13,15,17）的当前行（12）中的近似像素值近似于平坦线，并且相应的当前行中的像素值接近相邻块（20）中的像素（21,23,25,27）的像素（22）近似于平直线。将两个滤波器判定值与相应的阈值进行比较，并且如果滤波器判定值低于阈值，则为当前行（12）选择强的解阻塞滤波器，否则选择弱解块滤波器以对抗任何块伪影。

7. 发明申请

WO2012119655A1 DECODING OF TRANSFORMS WITH CURVED BASIS FUNCTIONS 审中-公开
标题翻译：用变换的基函数解码变换
公开(公告)号：WO2012119655A1
公开(公告)日：2012-09-13
申请号：PCT/EP2011/053580
申请日：2011-03-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , PRIDDLE, Clinton , ANDERSSON, Kenneth
发明人： NORKIN, Andrey , PRIDDLE, Clinton , ANDERSSON, Kenneth
IPC分类号： H04N7/26 , H04N7/30
CPC分类号： H04N19/86 , H04N19/44 , H04N19/60
摘要： The solution according to embodiments of the present invention is to reconstruct image blocks where only the frequency coefficient that is most sensitive to changes of an average value of the residual image block, typically the lowest frequency coefficient, is present with a flat residual image. The other image blocks are reconstructed by applying an inverse spatial 2D transform. Hence, the other image blocks comprise image blocks with multiple coefficients and image blocks with a single coefficient and wherein the single coefficient is not the coefficient determining (703) that is most sensitive to changes of an average value of the residual image block.
摘要翻译：根据本发明的实施例的解决方案是重建图像块，其中只有残留图像块的平均值（通常为最低频率系数）的变化最敏感的频率系数以平坦残差图像存在。通过应用逆空间2D变换来重建其他图像块。因此，其他图像块包括具有多个系数的图像块和具有单个系数的图像块，并且其中单个系数不是对残留图像块的平均值的变化最敏感的系数确定（703）。

8. 发明申请

WO2012096610A1 DEBLOCKING FILTERING 审中-公开
标题翻译：解锁过滤
公开(公告)号：WO2012096610A1
公开(公告)日：2012-07-19
申请号：PCT/SE2011/051199
申请日：2011-10-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/865 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/86
摘要： Blocking artifacts at a block boundary (1) between a block (10) and a neighboring block (20) in a video frame are reduced by calculating an offset based on pixel values of pixels (11, 13) in a line (12) of pixels (11, 13, 15, 17) in the block (10) and based on pixel values of pixels (21, 23) in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block (20). The offset is added to the pixel value of the pixel (11) closest to the block boundary (1) in the line (12) of pixels (11, 13, 15, 17) and is subtracted from the pixel value of the pixel (21) closest to the block boundary (1) in the corresponding line (22) of pixels (21, 23, 25, 27). The resulting deblocking filter has good low-pass characteristics and is efficient for reducing blocking artifact.
摘要翻译：在视频帧中的块（10）和相邻块（20）之间的块边界（1）处的块边缘（1）中的伪像通过基于像素（11,13）中的像素值（11,13）的像素值基于块（10）中的像素（11,13,15,17），并且基于相邻块中的像素（21,23,25,27）的对应行（22）中的像素（21,23）的像素值（20）。偏移被添加到像素（11,13,15,17）的行（12）中最靠近块边界（1）的像素（11）的像素值，并从像素（11,13,15,17）的像素值最接近像素（21,23,25,27）的对应行（22）中的块边界（1）的距离。所得到的去块滤波器具有良好的低通特性，并且对于减少块伪影是有效的。

9. 发明申请

WO2012118421A1 DEBLOCKING FILTERING CONTROL 审中-公开
标题翻译：消除过滤控制
公开(公告)号：WO2012118421A1
公开(公告)日：2012-09-07
申请号：PCT/SE2011/051526
申请日：2011-12-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/82
摘要： A first filter decision value is calculated for a block (10) of pixels (11, 13, 15, 17) in a video frame based on pixel values of pixels (11, 13, 15) in a first line (12) of pixels (11, 13, 15, 17) in the block (10). A second filter decision value is also calculated for the block (10) based on pixel values of pixels (21, 23, 25, 27) in a corresponding first line (22) of pixels (21, 23, 25, 27) in a neighboring block (20) in the video frame. The first filter decision value is used to determine how many pixels in a line (12) of pixels (11, 13, 15, 17) in the block (10) to filter relative to a block boundary (1) between the block (10) and the neighboring block (20). The second filter decision value is used to determine how many pixels in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block to filter relative to the block boundary (1).
摘要翻译：基于像素的第一行（12）中的像素（11,13,15）的像素值，针对视频帧中的像素（11,13,15,17）的块（10）计算第一滤波器判定值（11,13,15,17）。还基于像素（21,23,25,27）的对应的第一行（22）中的像素（21,23,25,27）中的像素（21,23,25,27）的像素值，针对块（10）计算第二滤波器判定值，视频帧中的相邻块（20）。第一滤波器判定值用于确定块（10）中的像素（11,13,15,17）中的像素（12）中相对于块（10）之间的块边界（1）进行滤波的像素数）和相邻块（20）。第二滤波器判定值用于确定相邻块中相对于块边界（1）滤波的像素（21,23,25,27）的对应行（22）中的像素数量。

10. 发明申请

WO2012096623A8 DEBLOCKING FILTERING 审中-公开
公开(公告)号：WO2012096623A8
公开(公告)日：2012-07-19
申请号：PCT/SE2012/050027
申请日：2012-01-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , SJÖBERG, Rickard , ANDERSSON, Kenneth
发明人： NORKIN, Andrey , SJÖBERG, Rickard , ANDERSSON, Kenneth
IPC分类号： H04N7/26 , H04N7/50
摘要： A method of reducing blocking artifacts associated with consecutive pixels of a block boundary of an image, such as e.g. a video frame is provided. Pixels values of pixels selected from a first block and at least a neighboring block, being located on opposite sides of a block boundary are evaluated. A first offset for the two pixels of each block located next to the block boundary is calculated, after which the first offset is compared to a first threshold value. If abs[first offset] = first threshold, the respective pixel values of j consecutive pixels from the first block and the respective pixel values of k consecutive pixels from the second block are modified by applying weak filtering or no filtering at all on the respective pixels, where n > 0, m>0 n>=j, and m>=k.

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